Im looking too buy licenses and stuff so I can travel more places , I cant find it anywhere. I dont want to spend actual USD on the game , I want it to be more challenging rather then just throwing money at it.

Im on earth at the moment , in america.

How do I go about leaving here ?

there is a section where you can buy credits from other users. You cn find it in the city overview.

Credits are dealed for about 50.000.000$ each on earth.
If you have that money and want to go to a place where other players are, take the balloon.
With this vehicle you can go almost everywhere on earth even if it's slow.
But you don't need to travel if you want to buy credits.
Just click the link deal credits and scroll down.
There you can place your offer under
Place offer for Credits

that's it.
You just neet to stay online and wait until someone is comming that gives you a credit for your money.
The more you pay the sooner that will happen.

best price for one credit just gone down to 46.000.000. Guess its a good time to buy credits now. prices are always raising and falling.